contestada

Solve 6 over x minus 4 equals 4 over x for x and determine if the solution is extraneous or not.

Respuesta :

Answer:

x= -8 not extraneous.

Step-by-step explanation:

We have been given the expression:

[tex]\frac{6}{x-4}=\frac{4}{x}[/tex]

We will cross multiply the terms we get:

[tex]6x=4(x-4)[/tex]

Now, we will simplify we get:

[tex]6x=4x-16[/tex]

[tex]6x-4x=-16[/tex]

[tex]2x=-16[/tex]

[tex]x=-\frac{16}{2}[/tex]

[tex]x=-8[/tex]

Extraneous is the point  which is not included in the domain of the function.

-8 is not extraneous.

Answer:

x=-8 is not extraneous.

Step-by-step explanation:

The given equation is :

[tex]\frac{6}{x-4}=\frac{4}{x}[/tex]

On cross multiplying the terms, we get

[tex]6x=4(x-4)[/tex]

⇒[tex]6x=4x-16[/tex]

⇒[tex]6x-4x=-16[/tex]

⇒[tex]2x=-16[/tex]

⇒[tex]x=\frac{-16}{2}[/tex]

⇒[tex]x=-8[/tex]

Now, Extraneous is the point  which is not included in the domain of the function but x=-8 is included in the domain of the given function.

Thus, x=-8 is not extraneous.